Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for making spherical molybdenum disulfide antifriction material using extraction solvent

A technology for extracting solvents and molybdenum disulfide, applied in the direction of molybdenum sulfide, additives, lubricating compositions, etc., can solve the problems of spherical particle control, surface modification redispersion and loading capacity without systematic research, and achieve simple and easy control of process operation , Improve the anti-friction effect and the effect of large load

Inactive Publication Date: 2007-12-19
QINGDAO UNIV OF SCI & TECH
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above research work, there is no systematic research on MoS 2 Problems such as spherical particle control, surface modification, redispersion in organic solvents, and loading capacity still need a coherent and simple method that integrates shape control, particle size control, and surface modification. Spherical MoS 2 Methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for making spherical molybdenum disulfide antifriction material using extraction solvent

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] At 0.08mol / L Na 2 MoO 4 To the aqueous solution, add an equal volume of 0.12mol / L Cyanex 301-gasoline solution, and when the acid concentration in the aqueous phase is 0.75mol / L, fully oscillate for extraction, and place it at room temperature for 24 hours to balance. After the two phases are separated, take 40ml of the extracted organic phase, place it in a polytetrafluoroethylene-lined autoclave (50ml), seal it, react at a constant temperature of 150°C for 24h, and cool it naturally. After washing several times and finally vacuum drying at 70 °C for 8 h, 0.31 g of black MoS was obtained 2 Powder. The MoS 2 It is a solid microsphere with a diameter of 1-3 μm.

example 2

[0025] At 0.08mol / L Na 2 MoO 4 Add an equal volume of 0.12mol / L Cyanex 301-gasoline solution to the aqueous solution, and when the acid concentration in the aqueous phase is 0.75mol / L, fully oscillate for extraction, and place it at room temperature for 24 hours to balance. After the two phases are separated, take 40ml of the extracted organic phase, place it in a polytetrafluoroethylene-lined autoclave (50ml), seal it, react at a constant temperature of 190°C for 24h, cool naturally, heat to volatilize the gasoline, and then extract the obtained The black precipitate was washed several times with acetone and ethanol, and finally dried in vacuum at 70 °C for 8 h to obtain 0.58 g of black MoS 2 Powder. The MoS 2 It is a solid microsphere with a diameter of 0.5-3 μm.

example 3

[0027] 0.12mol / L (NH 4 ) 2 MoO 4 Add an equal volume of 0.20mol / L Cyanex 302-gasoline solution to the aqueous solution, fully shake and extract when the acid concentration in the aqueous phase is 0.5mol / L, and let it stand at a constant temperature of 25°C for 24 hours. After the two phases are separated, take 40ml to extract the organic phase , placed in a polytetrafluoroethylene-lined autoclave (50ml), and added thioacetamide as a sulfur source, sealed, and reacted at a constant temperature of 150°C for 24h, then naturally cooled to room temperature, and the obtained black precipitate was washed with ethanol Washed several times and dried in vacuum at 70°C for 8h to obtain 0.25 g of black MoS 2 Powder. The MoS 2 It is a solid microsphere with a diameter of about 1 μm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparation of spherical molybdenum disulfide antifriction material by extraction-solvent thermal process, which contains: mixing soluble Mo(VI) compound solution with organic solution dissolved extractant, vibrating and extracting, putting the organic phase into an autoclave, in a certain temperature and pressure, Mo(VI) reacting to sulfur source to generate organic fluid loaded with molybdenum disulfide and molybdenum disulfide precipitation with surface finish, cooling down, filtering, washing, and drying to prepare the product. The merit of the method is characterized in that the technique is simple and controllable, and the manufactured product is organic group-finish molybdenum disulfide microsphere, of grain diameter of 0.5-3um and, highly dispersive in the oil and of large load capacity and excellent antifriction property.

Description

1. Technical field [0001] The invention belongs to the field of functional materials, and is to use an extractant dissolved in an organic solvent to extract Mo(VI) into an organic phase, and perform a solvothermal reaction to prepare submicron and micron spherical molybdenum disulfide (MoS 2 ) method of lubricating materials. 2. Technical background [0002] Before the present invention, MoS 2 Antifriction materials are well known as solid lubricants. MoS 2 From the point of view of its material structure, it belongs to the hexagonal crystal system, a transition metal layered binary compound, Mo atoms are in the middle of the trigonal columns formed by coordinating S atoms, and the common edges of the triangular columns form a plane layer, and there are chemical bonds between the layers. The layers are combined by van der Waals force, and this structure is characterized by MoS 2 Often used as solid lubricating antifriction materials. MoS prepared by the usual method 2 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/22C01G39/06
Inventor 傅洵胡正水石华强张绍玲周晓东吴丹梅
Owner QINGDAO UNIV OF SCI & TECH